KillerT

Hi everyone. I have a 2001 Audi TT 225 hp Quattro. The driver’s front wheel shudders noticeably when turbo kicks in (going straight). Looking in my wheel well I can see rub marks on the shock mount which is stationary. This makes me believe that the wheel is wobbling side-to-side. Does this make sense and what do you suppose is causing this? Axle? Loose hub? The tires are 235-40-18’s. Perhaps a little too big given I can’t turn all the way without hitting the wheel well. Thanks.